The sign for "house" uses
"flat hands" to show the roof and walls of a house.

HOUSE:

Hand shape:
The hand shape can be either "B" handshapes or just "flat" hands.

There are a couple
of different ways to do the sign "house."

You might see house signed with the fingers pointed upward. I wouldn't sign it
that way for everyday conversation but
this version could be used for times when you want to embellish your signing a
bit to make it more iconic and lively. For example,
I might use this version if I were
telling a story
to a group of children
about a certain "house."

HOUSE (version)

For everyday use though,
I tend to do the sign house with the fingertips pointing forward instead of up.

HOUSE (recommended version)

Notes:
House and home are two different signs. You should not use the sign "house" when
you mean home.